CN108505942A - A kind of single excitation Drilling vibration device and intermittent single excitation Drilling vibration device - Google Patents

Abstract

The present invention relates to vibrotechniques and Oil ＆ Gas Drilling Technology field, and in particular to a kind of single excitation Drilling vibration device and intermittent single excitation Drilling vibration device.Single excitation Drilling vibration device, including vibrating screen and vibration generating mechanism, it is characterized in that, vibration generating mechanism, including eccentric block rotary part and vibrating mechanism, vibrating mechanism includes vibrated component, support plate and torsional elastomer, support plate with can relatively vibrated component pivotably connect with vibrated component, the rotation axis of support plate and the plate face out of plumb of support plate, torsionspring is arranged between vibrated component and support plate, the energy rotated relative to vibrated component for storing or discharging support plate, eccentric block rotary part is arranged on the supporting plate, the rotation axis of eccentric block rotary part and support plate out of plumb, vibrated component is fixedly connected with vibrating screen, only need a motor driving that the elliptical vibration track of vibrating screen can be realized, it is simple in structure, it is of low cost, it is easier to control.

Description

A single excitation drilling vibration device and an intermittent single excitation drilling vibration device

technical field

The invention relates to the fields of vibration technology and oil and gas drilling technology, in particular to a single excitation drilling vibration device and an intermittent single excitation drilling vibration device.

Background technique

At present, domestic and foreign drilling shale shakers generally use multi-motor self-synchronous vibration systems to achieve the purpose of solid-liquid separation of drilling cuttings and drilling fluid. The multi-motor self-synchronizing drilling vibrating screen system uses multiple motors to synchronously drive the vibrating screen to achieve an elliptical or linear motion trajectory. Due to the existence of at least two motor drives, there is a situation in which the motors are reversely synchronized, resulting in the vibrating screen system in certain periods of time. The amplitude is small, and even the amplitude is zero. At the same time, the reverse synchronization of multiple motors consumes a lot of energy, and there is no substantial energy consumption required to offset each other, which makes the operating cost of the vibrating screen system higher. Moreover, the vibrating screen The selection of elliptical and linear motion trajectories and the selection of elliptical trajectory parameters all depend on the synchronization state and structural parameters of the system. The existence of at least two motors makes the design and manufacture of the vibration system difficult, and the manufacturing cost is high.

At the same time, during the rapid drilling process, the multi-motor self-synchronized drilling shale shaker system is accompanied by intermittent "slurry running phenomenon", which damages the ecological environment. The main reason for the "slurry running phenomenon" is that a large number of "critical solid phase particles" in the drilling mud are easily stuck into the screen mesh holes and cause "sieve plugging", which leads to the "slipping phenomenon" that the drilling fluid cannot penetrate the screen in time. In order to avoid the "slurry running phenomenon" of the drilling shale shaker, the existing drilling shale shaker reduces the clogging probability of the screen mesh by increasing the area of the screen mesh and increasing the excitation intensity. However, increasing the screen area will increase the floor area and production cost of the vibrating screen; increasing the intensity of the excitation will shorten the life of the vibrating screen and screen, and will cause secondary environmental pollution caused by drilling fluid splashing.

Contents of the invention

The purpose of the present invention is to provide a single-excitation drilling vibration device and an intermittent single-excitation drilling vibration device for the current drilling shale shaker that requires multiple motors to drive, resulting in high cost, small amplitude in certain periods, and difficult design and manufacture. Only one motor is needed to realize the elliptical or linear vibration track of the vibrating screen, which makes the cost of the vibrating screen low and the design and manufacture easier.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A single excitation drilling vibration device, including a vibrating screen and a vibration generating mechanism, characterized in that the vibration generating mechanism includes an eccentric mass rotating part and a vibration mechanism,

The vibration mechanism includes a vibration receiving part, a support plate and a torsion elastic member, the support plate is connected to the vibration receiving part in a pivotable manner relative to the vibration receiving part, and the rotation axis of the support plate is connected to the rotation axis of the support plate The board surface is not vertical, and the torsion spring is arranged between the vibration-receiving part and the support plate for storing or releasing the energy of the support plate rotating relative to the vibration-receiving part,

The eccentric mass rotating part is arranged on the support plate, the rotation axis of the eccentric mass rotating part is not perpendicular to the support plate,

The vibration-receiving component is fixedly connected with the vibrating screen.

Specifically, the torsional elastic member is arranged between the vibration receiving part and the support plate, including three situations, one is that the two ends of the torsional elastic member are directly connected with the vibration receiving part and the support plate, and the other is that the torsion elastic One end of the member is directly connected to the support plate, and the other end is indirectly connected to the vibration-receiving part through other components.

Specifically, the vibration-receiving component is a component that receives vibration, or a component that is connected with a device that receives vibration.

The rotation axis of the support plate is not perpendicular to the surface of the support plate, preferably, the rotation axis of the support plate is parallel to the surface of the support plate.

When in use, the rotation axis of the support plate should coincide with the center of mass of the vibrating system.

Preferably, the vibrating mechanism further includes a rotation shaft connected to the vibration-receiving component in a manner capable of pivoting relative to the vibration-receiving component, and the support plate is fixedly connected to the rotation shaft.

Preferably, the vibration mechanism further includes an indexing plate, the indexing plate is directly or indirectly fixedly connected to the support plate, one end of the torsion elastic member is connected to the vibration-receiving component, and the other end is connected to the dividing plate. The dial is fixedly connected.

Preferably, at least two adjustment holes are provided on the index plate, the adjustment holes are distributed along the circumference of the rotation axis of the index plate, and the other end of the torsion elastic member is matched with one of the adjustment holes , in order to adjust the angle between the long axis of the elliptical vibration track and the horizontal plane, and adjust the angle between the linear vibration track and the horizontal plane.

Preferably, the indexing plate is provided with at least two pin holes along the rotation axis to facilitate the installation of the torsion elastic member, and the pin holes are used to fix the indexing plate on the rotating shaft with pins. Specifically, when installing the torsional elastic member, after one end of the torsional elastic member is connected to the vibration-receiving part, the other end may not always be aligned with the adjustment hole. Hole alignment is laborious and easy to damage the torsional elastic member, and it is also easy to make the vibration track within a predetermined range, thus at least two pin holes are provided on the index plate so that the other end of the torsion elastic member is not aligned with the adjustment hole , just turn the indexing plate, which is convenient for installation.

Preferably, the torsional elastic member is a torsional elastic member, and the torsion elastic member is sleeved on the rotating shaft, and the extremely tight position of the torsion elastic member has a gap with the shaft side of the rotating shaft.

Specifically, the extremely tight position is the state when the mechanical energy absorbed by the torsion elastic member reaches its self-lifting maximum, that is, the state where the torsion is tightened to the point where it cannot be tightened any more.

Preferably, the torsion axis of the torsion elastic member coincides with the axis of the rotation shaft.

As preferably, the vibrating screen includes a feed inlet, a vibrating screen frame, a compression spring, a base and a screen, the feed inlet is arranged in the vibrating screen frame, and the screen is arranged at the bottom of the vibrating screen frame , the vibrating screen frame is connected to the base through the compression spring.

This patent also discloses an intermittent single-excitation drilling vibration device, which includes an intermittent ultrasonic vibration device and the above-mentioned single-excitation drilling vibration device. The intermittent ultrasonic vibration device is connected to the vibrating screen, and the vibrating screen is excited to produce intermittent vibrations .

In summary, due to the adoption of the above technical solution, the beneficial effect of this application is that only one motor is needed to realize the elliptical or linear vibration track of the vibrating screen, so that the cost of the vibrating screen system is low, and there is no reverse rotation of multiple motors. The problem of synchronization can avoid the problem that the vibrating screen has a small amplitude in certain periods of time caused by the reverse synchronization of multiple motors, and can save the energy consumption required for mutual offset caused by the reverse synchronization of multiple motors, because only one motor is required to drive , the design is simpler and the manufacturing cost is lower.

Description of drawings

Fig. 1 is the structural representation of the intermittent single excitation drilling vibration device of the present application;

Fig. 2 is the structural representation of the vibration mechanism of the present application;

Fig. 3 is the B direction schematic diagram in Fig. 2;

Fig. 4 is a schematic diagram of direction B in Fig. 2, only the index plate is shown in the figure, and other parts are omitted;

Fig. 5 is A-A sectional view among Fig. 3;

Marks in the figure: 110—vibrating screen; 111—feed inlet; 112—vibrating screen frame; 113—compression spring; 114—base; 115—screen; 120—vibration mechanism; ; 131—eccentric block; 132—asynchronous motor; 140—intermittent ultrasonic vibration device; 141—ultrasonic wire, 142—ultrasonic transducer, 143—ultrasonic generator, 144—pulse controller; 150— Ultrasonic vibrator fastening device.

Detailed ways

Below in conjunction with accompanying drawing, the present invention is described in detail.

In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Please refer to Fig. 1, the present embodiment provides an intermittent single-excitation drilling vibrating device, including an intermittent ultrasonic vibrating device 140 and a single-exciting drilling vibrating device, the intermittent ultrasonic vibrating device is connected with the vibrating screen 110 to excite vibration The screen 110 generates intermittent vibrations.

The single-excitation drilling vibration device includes a vibrating screen 110 and a vibration generating mechanism. The vibration generating mechanism includes an eccentric mass rotating part 130 and a vibrating mechanism 120. Specifically, the eccentric mass rotating part 130 is installed on the vibrating mechanism 120, the vibrating mechanism 120 is installed on the vibrating screen 110, and the intermittent ultrasonic vibrating device 140 is connected to the ultrasonic vibrator tightly. Fixing device 150, the ultrasonic vibrator fastening device 150 fixes the ultrasonic vibrator and the screen mesh of the vibrating screen.

Referring to FIGS. 2-5 , the vibration mechanism 120 includes a vibration-receiving component 121 , a torsion elastic member 122 , an index plate 123 , a support plate 124 , a rotating shaft 125 , a positioning pin 126 , a bearing 127 and a rib 128 . The vibration-receiving part 121 and the bearing 127 are interference fit; the inner ring of the bearing 127 is interference-fitting with the rotating shaft 125; Connection, the inner diameter axis of the torsional elastic member 122 coincides with the axis of the rotating shaft 125, and there is a certain gap between the extreme position of the torsion elastic member 122 and the outer surface of the rotating shaft 125, so as to prevent the torsion elastic member 122 from “locking” the rotating shaft 125 in the working state of the system . A number of adjustment holes are evenly distributed along the axis of the index plate 123, and the supporting end of the torsion elastic member 122 is matched with the adjustment holes. When the supporting end of the torsion elastic member 122 fits with different adjustment holes, the inclination angle of the vibrating mechanism 120 relative to the vibrating component is different. The supporting plate 124 and the rib plate 128 are connected to the rotating part of the eccentric block by welding. Welding is also used between the rib plate 128 and the rotating shaft 125 . In order to ensure that the trajectory shapes at different positions of the vibrating screen are consistent, the axis of the rotating shaft 125 coincides with the centroid of the vibrating screen system.

The eccentric mass rotating part 130 is connected with the support plate 124 by using anti-loosening bolts. The eccentric mass rotating part 130 is driven by the asynchronous motor 132 to rotate the eccentric mass 131 to generate an exciting force. When the vibrating screen system is running, the exciting force parallel to the direction of the support plate 124 is absorbed by the torsion elastic member 122, so the single eccentric mass rotating part drives the vibrating screen to move in an ellipse or in a straight line. The inclination angle of the long axis of the linear trajectory and the elliptical trajectory of the vibrating screen depends on the inclination angle of the rotating part 130 of the eccentric mass. The trajectory shape of the vibrating screen depends on the distance between the rotation center of the asynchronous motor 132 and the axis of the rotation shaft 125 . The longer the distance, the vibrating screen trajectory tends to be straight, otherwise it tends to be elliptical. When the trajectory of the vibrating screen is a straight line, the stiffness of the torsional elastic member 122 can be adjusted to obtain an elliptical trajectory. The smaller the stiffness of the torsion elastic member 122, the vibrating screen trajectory tends to be straight, otherwise it tends to be elliptical.

Referring to FIG. 1 , the vibrating screen 110 includes a feed inlet 111 , a vibrating screen frame 112 , a compression spring 113 , a base 114 and a screen 115 . The feeding port 111 is fixedly installed on the base 114 , and the base 114 supports the vibrating screen frame 112 through the compression spring 113 . The screen 115 is horizontally installed on the vibrating screen frame 112, the vibrating screen frame 112 supports the screen 115, the vibration receiving part 121 is connected with the vibrating screen frame 112, the whole vibrating screen is a device that needs to vibrate, and the vibration generated by the vibration generating mechanism is to make the vibrating screen vibration.

Referring to FIG. 1 , the intermittent ultrasonic vibration device 140 includes an ultrasonic wire 141 , an ultrasonic transducer 142 , an ultrasonic generator 143 and a pulse controller 144 . The ultrasonic generator 143 is connected to the ultrasonic vibrator by the ultrasonic wire 142, and the ultrasonic vibrator is evenly installed on the screen. The pulse controller is connected to 144 ultrasonic generator 143, and the pulse controller 144 controls the ultrasonic generator 143 to generate intermittent ultrasonic signals; the pulse ultrasonic signal is transmitted to the ultrasonic transducer 142, and the transducer 142 converts high-frequency electrical energy into mechanical energy and transmits it to the ultrasonic wave. The vibrator and the vibrating screen produce intermittent ultra-high frequency and micro-amplitude vibrations to achieve the purpose of unblocking, solve the problem of easy blockage of the screen mesh, and there is no continuous, large-amplitude vibration source that causes vibration screen and screen fatigue In case of failure.

Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (8)

1. A single excitation drilling vibrating device, comprising a vibrating screen and a vibration generating mechanism, is characterized in that the vibration generating mechanism includes an eccentric mass rotating part and a vibrating mechanism, The vibration mechanism includes a vibration receiving part, a support plate and a torsion elastic member, the support plate is connected to the vibration receiving part in a pivotable manner relative to the vibration receiving part, and the rotation axis of the support plate is connected to the rotation axis of the support plate The board surface is not vertical, and the torsion spring is arranged between the vibration-receiving part and the support plate for storing or releasing the energy of the support plate rotating relative to the vibration-receiving part, The eccentric mass rotating part is arranged on the support plate, the rotation axis of the eccentric mass rotating part is not perpendicular to the support plate, The vibration-receiving component is fixedly connected with the vibrating screen. 2. The single-excitation drilling vibration device according to claim 1, further comprising a rotating shaft connected to the vibration-receiving member in a manner capable of pivoting relative to the vibration-receiving member, and the support plate is connected to the rotating shaft The shaft is fixedly connected. 3. The single-excitation drilling vibration device according to claim 1 or 2, further comprising an indexing plate, the indexing plate is directly or indirectly fixedly connected with the support plate, and the torsional elastic member One end is connected with the vibration-receiving component, and the other end is fixedly connected with the indexing plate. 4 . The single excitation drilling vibration device according to claim 3 , wherein at least two adjustment holes are provided on the index plate, and the other end of the torsion elastic member fits with one of the adjustment holes. 5. The single excitation drilling vibration device according to claim 4, characterized in that at least two pin holes are provided on the said index plate for installing torsion elastic parts. 6. The single excitation drilling vibration device according to claim 2, characterized in that, the torsional elastic member is a torsional elastic member, the torsional elastic member is sleeved on the rotating shaft, and the poles of the torsional elastic member There is a gap between the tight station and the shaft side of the rotating shaft. 7. The single excitation drilling vibration device according to claim 1, characterized in that, the vibrating screen comprises a feeding port, a vibrating screen frame, a compression spring, a base and a screen, and the feeding port is arranged on the vibrating screen. In the screen frame, the screen is arranged at the bottom of the vibrating screen frame, and the vibrating screen frame is connected to the base through the compression spring. 8. An intermittent single-excitation drilling vibrating device, characterized in that it comprises an intermittent ultrasonic vibrating device and the single-exciting drilling vibrating device described in claims 1-8, characterized in that the intermittent ultrasonic vibrating device and the described The vibrating screen is connected to excite the vibrating screen to produce intermittent vibration.